later, the jury finally gets to decide whether jodi arias killed her boyfriend in self-defense or murdered him in cold blood. blockbuster closing arguments and only on "360," the friend who lived with the missing mom, brenda heist, during some of the 11 years she was presumed dead and gone. >>> we begin with breaking news, on a day that president obama once again said the assad regime's use of chemical weapons would be a game changer, after a week of weighing military action or directly supporting the opposition, a u.s. ally, israel, has apparently hit syria from the air. barbara starr broke the story, joins us now with what her sources are telling her. >> reporter: good evening, anderson. two u.s. officials are telling me that now, tonight, u.s. and western intelligence agencies are reviewing classified data indeed showing that israel did conduct an air strike into syria. this kind of classified information usually radar communication intercepts, that sort of thing. here's what's so interesting. in the thursday-friday time frame, 16 israeli war planes were registered by the lebanese as fl